Advertisements
Advertisements
प्रश्न
Group 1 and 2 : s block : : group 13 and 18 : _______
Advertisements
उत्तर
Group 1 and 2 : s block : : group 13 and 18 : p Block
APPEARS IN
संबंधित प्रश्न
Fill in the blank:
The modern periodic table consists of ……………. periods.
How does the electronic configuration of an atom relate to its position in the Modern Periodic Table?
How does the tendency of elements to gain electrons change as we move from left to right in a period? State the reason of this change.
What is meant by a period, in a periodic table?
On which side of the periodic table will you find metals?
The atomic numbers of four elements P, Q, R and S are 6, 8, 14 and 16 respectively. Out of these, the element known as metalloid is:
(a) P
(b) Q
(c) R
(d) S
How does the chemical reactivity of the halogens vary on going in group 17 of the periodic table?
What is the number of valence electrons in the atoms of first elements in a period?
Explain why All the elements of a group have similar chemical properties.
What is the fundamental difference in the electron configurations between the group 1 and group 2 elements?
On the basis of electronic configuration, how will you identify chemically similar elements?
What are the merits of the modern periodic table of elements?
What are the advantages of the periodic table?
The following diagram shows a part of the periodic table in which the elements are arranged according to their atomic numbers. (The letters given here not the chemical symbols of the elements):
| a 3 |
b 4 |
c 5 |
d 6 |
e 7 |
f 8 |
g 9 |
h 10 |
|
| i 11 |
j 12 |
k 13 |
l 14 |
m 15 |
n 16 |
o 17 |
p 18 |
(i) Which element has a bigger atom, a or f?
(ii) Which element has a higher valency, k or o?
(iii) Which element is more metallic i or k?
(iv) Which element is more non-metallic, d or g?
(v) Select a latter which represents a metal of valency 2.
(vi) Select a letter which represents a non-metal of valency 2.
Write the number of protons, neutrons and electronic configuration of \[\ce{_19^39K, _15^31P}\]. Also state their position in periodic table.
State the main aim of classifying elements. Which is the more fundamental property of elements that is used in the development of Modern Periodic Table? Name and state the law based on this fundamental property. On which side of the periodic table one can find metals, non-metals and metalloids?
State the modern periodic law for classification of elements. How many (i) groups and (ii) periods are there in the modern periodic table?
An element E has following electronic configuration:
|
K |
L |
M |
|
2 |
8 |
6 |
(a) To which group of the periodic table does element E belong?
(b) To which period of the periodic table does element E belong?
(c) State the number of valence electrons present in element E.
(d) State the valency of the element E.
What would be the correct order if Zn, Fe, Al and Cu are arranged in increasing order of reactivity?
How does number of (i) valence electrons (ii) valency; vary on moving from left to right in the second period of a periodic table?
The horizontal rows in a periodic table are called _____.
Give the symbol and valency of the following element and radical.
Ammonium
Fill in the blank:
The element lithium in the Modern Periodic Table with valency 1+ belongs to the group ______.
What are the elements.
Mendeleev's periodic table : atomic mass : : Modern periodic table : _______
The modern periodic table has 1 to 7 periods.
The modern periodic table shows the molecular masses of the elements in each frame.
Write an Explanation.
Period
State whether true or false. If false, correct the statement.
Lanthanides and actinides are kept at the bottom of the periodic table because they resemble each other but they do not resemble with any other group elements.
What are groups and periods in the modern periodic table?
State any five features of modern periodic table.
______ is the longest period in the periodical table.
The arrangement of elements in the Modem Periodic Table is based on their ______
The element with atomic number 14 is hard and forms acidic oxide and a covalent halide. To which of the following categories does the element belong?
The element with atomic number 14 is hard and forms acidic oxide and a covalent halide. To which of the following categories does the element belong?
Choose an element from period 3 of modern periodic table that matches the description given below in instance. Give a reason for your choice.
It has same valency as Lithium.
Group 16 elements are collectively called as ______.
- Write the electronic configuration of element X, given by its symbol as under: \[\ce{^40_20 X}\]
- Determine its position in the modem periodic table.
- What is the nature of its oxide?
- Name one other element of its group.
Name the metalloids in the first twenty elements.
